What city are you getting a $500 apartment in, and what health insurance plan is $30?
In New York City: Example 1: https://www.nytimes.com/2016/03/01/nyregion/overcrowding-wor... Example 2: https://www.nytimes.com/interactive/2019/10/23/nyregion/base...
Probably possible with a roommate. Still possible without, but rarer. I’ve seen dirt cheap one rooms available (think like $350/m) in middle of nowhere Utah. In certain cities, you can even live in the city, for maybe a little more than $500. I’ve seen them for example, in Des Moines.
I wouldn’t necessarily blanket any region, as as you drill down, you find that some places where’s you’d expect cheaper housing don’t have it because of whatever local bureaucracy is preventing it.